<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Copyright (C) 1999-2023 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with the
Invariant Sections being "Funding Free Software", the Front-Cover
Texts being (a) (see below), and with the Back-Cover Texts being (b)
(see below).  A copy of the license is included in the section entitled
"GNU Free Documentation License".

(a) The FSF's Front-Cover Text is:

A GNU Manual

(b) The FSF's Back-Cover Text is:

You have freedom to copy and modify this GNU Manual, like GNU
     software.  Copies published by the Free Software Foundation raise
     funds for GNU development. -->
<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>GETARG (The GNU Fortran Compiler)</title>

<meta name="description" content="GETARG (The GNU Fortran Compiler)">
<meta name="keywords" content="GETARG (The GNU Fortran Compiler)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<link href="index.html" rel="start" title="Top">
<link href="Option-Index.html" rel="index" title="Option Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Intrinsic-Procedures.html" rel="up" title="Intrinsic Procedures">
<link href="GET_005fCOMMAND.html" rel="next" title="GET_COMMAND">
<link href="GERROR.html" rel="prev" title="GERROR">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
ul.no-bullet {list-style: none}
-->
</style>


</head>

<body lang="en">
<span id="GETARG"></span><div class="header">
<p>
Next: <a href="GET_005fCOMMAND.html" accesskey="n" rel="next">GET_COMMAND</a>, Previous: <a href="GERROR.html" accesskey="p" rel="prev">GERROR</a>, Up: <a href="Intrinsic-Procedures.html" accesskey="u" rel="up">Intrinsic Procedures</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<span id="GETARG-_002d_002d_002d-Get-command-line-arguments"></span><h3 class="section">8.121 <code>GETARG</code> &mdash; Get command line arguments</h3>
<span id="index-GETARG"></span>
<span id="index-command_002dline-arguments-1"></span>
<span id="index-arguments_002c-to-program-1"></span>

<dl compact="compact">
<dt><em>Description</em>:</dt>
<dd><p>Retrieve the <var>POS</var>-th argument that was passed on the
command line when the containing program was invoked.
</p>
<p>This intrinsic routine is provided for backwards compatibility with 
GNU Fortran 77.  In new code, programmers should consider the use of 
the <a href="GET_005fCOMMAND_005fARGUMENT.html">GET_COMMAND_ARGUMENT</a> intrinsic defined by the Fortran 2003 
standard.
</p>
</dd>
<dt><em>Standard</em>:</dt>
<dd><p>GNU extension
</p>
</dd>
<dt><em>Class</em>:</dt>
<dd><p>Subroutine
</p>
</dd>
<dt><em>Syntax</em>:</dt>
<dd><p><code>CALL GETARG(POS, VALUE)</code>
</p>
</dd>
<dt><em>Arguments</em>:</dt>
<dd><table>
<tr><td width="15%"><var>POS</var></td><td width="70%">Shall be of type <code>INTEGER</code> and not wider than
the default integer kind; <em><var>POS</var> \geq 0</em></td></tr>
<tr><td width="15%"><var>VALUE</var></td><td width="70%">Shall be of type <code>CHARACTER</code> and of default
kind.</td></tr>
</table>

</dd>
<dt><em>Return value</em>:</dt>
<dd><p>After <code>GETARG</code> returns, the <var>VALUE</var> argument holds the
<var>POS</var>th command line argument. If <var>VALUE</var> cannot hold the
argument, it is truncated to fit the length of <var>VALUE</var>. If there are
less than <var>POS</var> arguments specified at the command line, <var>VALUE</var>
will be filled with blanks. If <em><var>POS</var> = 0</em>, <var>VALUE</var> is set
to the name of the program (on systems that support this feature).
</p>
</dd>
<dt><em>Example</em>:</dt>
<dd><div class="example">
<pre class="example">PROGRAM test_getarg
  INTEGER :: i
  CHARACTER(len=32) :: arg

  DO i = 1, iargc()
    CALL getarg(i, arg)
    WRITE (*,*) arg
  END DO
END PROGRAM
</pre></div>

</dd>
<dt><em>See also</em>:</dt>
<dd><p>GNU Fortran 77 compatibility function: <br>
<a href="IARGC.html">IARGC</a> <br>
Fortran 2003 functions and subroutines: <br>
<a href="GET_005fCOMMAND.html">GET_COMMAND</a>, <br>
<a href="GET_005fCOMMAND_005fARGUMENT.html">GET_COMMAND_ARGUMENT</a>, <br>
<a href="COMMAND_005fARGUMENT_005fCOUNT.html">COMMAND_ARGUMENT_COUNT</a>
</p></dd>
</dl>






</body>
</html>
